Johet schibs



.l. SCHIES.

CLOSURE FOR CONTAINERS- APPLICATION HLED MAY 5. I917- Patented Sept. 9, 1919.

UNITED STATES PATENT OFFICE, i

JOHN SCI-HES, or ANDERSON, INDIANA.

cnosunn m. co rA NnRs.

Specification of Letters l aten t.

Patented Sept. 9, 1919.

Applicationfiled May 5, 1917. Serial No. 166,556.

Z '0 all whom it may concern: 1

Be it known that I, JOHN SoHms, a citihas LfOl'itS object the provision of a closurecap received over and secured to. the mouth of a container by novel connecting means so interposed between the wall of the mouth of the container and its cap, as to prevent binding contact between the container and the cap.

My improved closure-cap will be found to be particularly useful in forming a glass closure-cap for a usual glassjar, in that,

by making the connecting means, interposed between the wall of the mouth of the jar and the cap, of non-frangible material, the closure-cap may be firmly secured upon the jar, while avoiding a glass to glass contact between the jar and its cap, thereby preventing the liability of breaking the glass by i the friction between contactingfglass surfaces, due to the tendency of a glass upon glass connection to freeze or stick.

The invention will be readily understood from the following description and claims, and from the drawings, in which latter:

Figure 1 is a side elevation of a container having a closure-cap constructed in accordance with my invention.

Fig. 2 is an enlarged bottom view of the closure-cap.

Fig. 8 is a side elevation of a container and closure-cap embodying my invention, partly broken away and partly in axial section in the plane of the line 3-3 of Fig. 2.

Fig. 4 is an axial section of the closure-cap taken on the line 4L lof 2, and showing a slightly different form of packing means for the closure-cap.

Figs. 5 and 6 are a side elevation and a bottom view respectively, of the thread forming ring, removed from the closurecap; and,

Fig. 7 is a fragmentary side elevation of a container with itsclosure-cap removed.

A container to which my improved closure-ca may be secured is represented at 1.1. It is exemplified as a usual glass jar, and the brevity and eanciseness,

the closure will be hereinafter referred to as a jar, although it will be obvious that my invention is also applicable to various other containers.

The jar is instanced as having a usual neck 12 extending outwardly from a breast 13, and forming a mouth 14 at the outer end 15 of the neck. The neck is preferably formed with a usual screw-thread 16, molded integral with the neck upon the outer periphery of the same. V

The closure for the jar, which may be made of the same material as the jar, hereinafter referred to as glass, is exemplified as comprising a cap 18 adapted to be received over the mouth of the j ar,the cap being providedwith a depending annular flange 19 received about the neck of the jar, but preferably spaced from the body of the neck, as shown at 20.

-Packing means are preferably provided between the jar and the cap 18, for providing an air-tight joint between the sameand avoiding a glass upon glass contact between the cap and the jar. The packing means employed may comprise a resilient gasket or rubber-ring 22, as illustrated in Figs. 2 and 3, or a paraffin disk 23, as shown in Fig. 4, the packing means being. preferably received within the closure-cap and seating upon the outer end 15'of the neck of the jar, for maintaining the contents within the jar and preventing exuding thereof to the outer surface of the neck and the clamping means hereinafter referred to. i

The flange of the closure-cap is preferably of such height that its outer edge 24: will be spaced from the breastof the jar when the closure-cap is received over the mouth of the jar, whereby a. glass upon glass contact is avoided between the flange of the closurecap and the breast of thejar.

The screw-thread upon the neck of jar 11, is adapted to beengaged by a screw-thread 27 secured to the cap, preferably to the flange 19 of the closure-cap, for positively connectingthe closure-cap to the jar, while preventing contact between theclos'ure-cap and the thread 16, or other parts of the neck or body of the jar. The material of the screw-thread 27 is different from the materials of the jar and cap, and is exemplified as formed from a wire 28 of metal coiled into preferably a single convolution of substantially uniform diameter throughout, and ad venefmg in the direetisn of the length axis so as to form a screw-thread member complemental to the thread upon the neck of ar 11.

The screw-thread member 27 is exempli fied as received within the closure-cap with the portion of wire 28 forming the start of the thread, represented at 32, preferably positioned adjacent the outer edge of flange 19, and the portion of wire 28 forming the end of the thread, as represented at 33, positioned against the inner face of depending flange 19 proximate to, but suitably spaced from the junction of the depending flange with the top portion of the cap 18.

The screw-thread member is adapted to be secured in this position by retaining means preferably forming an integral part of wire 28, and engaging suitably positioned slots in flange19. The parts are preferably so arranged that the slots may be formed in the flange adjacent the top portion of cap 18 so as to provide a substantial width of the wall of the flange between the slots andthe outer edge 24 of the flange, whereby the liability of causing the glass of the flange to be broken, due to the clamping stress of the closure, may be avoided.

Instancing this arrangement, the portion of wire 28 which forms the end of the screwthread, is exemplified as terminating adja cent the junction of flange 19 with the top portion of the cap 18, in an outwardly bent end-lip 35. This end-lip is arranged-to be received in aslot 36 in the flange. The portion of wire 28 which forms the start of the screw-thread adjacent theouter edge of flange 19, 1s instanced as also terminating in an end-lip arranged to be received in slot 1, 36. For this purpose, the end of the wire at the start of the screw-thread, is exemplified as bent in the direction of the length of the axis of the curvature described by the screwthread, toward the top portion of cap 18 and along the inner face of the flange of the closure-cap, as shown at 37, and is then bent v outwardly contiguous to end-lip 35, to form an end-lip 38 received in slot 36.

An additionalretaining means, instanced as a retaining, lip 42, is preferably formed in the screwthread member substantially diametrically opposite end-lips 35, 38, the retaining lip being arranged to engage-a slot 43 in flange 19.. The screw-thread member is exemplified as outwardly flared opposite to The middle portion of this outward flare is bent toward the top portion of cap 18 along the inner face of flange 19 as shown at 40, to a 'point adjacent the junction of the flange and the top portion of cap 18-, and is then bent outwardly to form the retaining lip 42. I

In positioning the screw-thread member as thus formed, within the closure-cap, lip 42 is first placed in its slot, and the end-lips 35, 38, are then snapped into slot 36, the wire forming the screw-thread member possessing suflicient resiliency to firmly hold the screw-thread member as thus positioned within the flange of the closure-cap.

The inner face of flange 19 of the closurecap is exemplified as recessed transversely of the flange, from the outer edge of the flange to the slots formed therein, and at the parts of the inner face of the flange against which portion 32 and the outwardly flared portion 39 of the screw-thread member are arranged to be respectively received. The portion 32 is exemplified as suitably curved so as to be received against and conform to the base of a recess 42.

thread is'gradually curved toward the axis of the cap, the outer end thereof being positioned outside said cylindrical projection for providing a starting portion for the screw-thread arranged to readily coact with the complemental thread 1.6 on the neck of the jar.

The recess in the inner face of flange 19 at the part thereof against which the outwardly flared portion 39 of the screw-thread is received, and which is represented at 45, is exemplified as suitably arranged and of such depth as to accommodate the outwardly flaring portion of the screw-thread, and the portion 40 of the flare which is bent toward cap 18, so that the bent portion is positioned outside of the cylindrical projection of the uniform curve describing the screw-tln'eml.

The screw-thread member 27 is thus adapted to engage its complemental screwthread without having the bent portions 37, 40, interfere with the rotative movement between the complemental screw-threads.

lVhile I have described screw-thread member 27 as secured to the closure-cap, and thread 16 as molded upon the neck of the jar, it is obvious that the parts may be reversed, if so desired, and the screw-thread formed by wire 28, secured to the neck of a jar and a complemental screw-thread mold ed upon the inner face of the closure-cap, since in either construction, the metallic screw-thread member forming the connecting means between the a1 and its cap, will be interposed between the adjacent glass surfaces of the jar and its cap, for firmly securing the cap to the jar, but at the same time preventing contact between the ar and cap.

Having thus fully described my invention,

what I claim as new and desire to secure by Letters Patent, 1s:

1. The combination with a glass container having a mouth formed with a glass wall, of a glass closure-cap received over said mouth and having a glass depending wall received about said glass wall of said mouth, one of said glass walls having a glass screw-thread formed integrally thereon, the cylindrical projections of said screw-thread and the other of said walls having a cylindrical said walls, and said Wire screw-thread projecting past said space into engagement with said first-named glass screw-thread and acting to center said first-named wall with relation to said second-named wall by the pressures in axial directions between said screw-threads, for separating said glass Walls throughout their proximate cireumferential faces.

2. In combination, a closure-cap for a container, said cap having an annular depending flange, a wire coiled to form a screwthread received Within said closure-cap against said annular depending flange, said depending flange provided with slots adjacent the upper end of said cap and spaced from the lower edge of said flange, and said wire having portions thereof outwardly flared and bent in the direction of the length of the axis of said coil and toward said top of said cap and then outwardly bent to form retaining lips arranged to be received in said slots for securing said coiled wire against said annular depending flange, the inner face of said annular depending flange being recessed at the outwardly flared and axially bent portions of said wire, with the body of said flange extending across the outside of said outwardly flared and axially bent portions of said wire, whereby said portions of said Wire received in said re cesses are outside of the cylindrical projection of said screw-thread.

8. In combination, a closure-cap for a container, said cap having an annular depending flange, a wire coiled to form a screwthread received Within said closure-cap against said annular depending flange, the end of said Wire at the start of said screwthread being outwardly curved and then bent toward the end of said wire at the other end of said screw-thread, the ends of said wire terminating in contiguous outwardly bent retaining lips, said depending flange provided with a slot arranged to receive said contiguous retaining lips, and the inner face of said annular depending flange being recessed at said outwardly curved and axially bent portions of the threadstarting end of said wire to receive said portions of said wire, with the body of said flange extending across the outside of said outwardly flared and axially bent portions of said Wire, whereby the start of said thread formed by the outwardly curved portion of said wire, and the axially bent portion of said wire are outside of the cylindrical projection of said screw-thread.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

JOHN SCHIES. Witnesses:

CHAS. LEIB, JOHN Kmeo.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

